Notification Services with an Oracle backend database

I recently learned about Notification Services at TechEd, and have a
question. Our company sells an application that can utilize SQL Server
or Oracle as the backend database. I'd love to investigate using
Notification Services as the engine for our app, but can't consider it
if Oracle isn't supported. So my question: Is it possible to use
Notification Services with a non-SQL Server (namely Oracle) backend
database? Thanks!
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